Funny old game,why oh why

cliffed · Nov 6, 2018

Real busy/hard day,2nd fix remote office in garden.
Finished,now the testing.
It’s way out in the countryside,measured Zs @ DB in house, 0.02 ohms,PSC 23 ka, seems unusual.
DB in office a 6.0mm 3c swa,Zs 1.05 ohms.
That’s really not possible,the cables about 35 m in length,crap end to the day,going to try another tester,& re test.

cliffed · Nov 6, 2018

Richard Burns said:
Bad day and one terminal not done up, perhaps.
It is going to be something simple.
Fresh start and all should become clear.
Good luck.

Cheers

cliffed · Nov 6, 2018

buzzlightyear said:
should the Swa cable be 10 mm considering the run of 35 meters .
Or did you calculate for 6mm..?

Yea I thought that,not a lot of load on it though,bow down to others ie: gaffers.

buzzlightyear · Nov 6, 2018

Their is a lot of possible. V/D .cliffed.

Octopus · Nov 6, 2018

Some RCDs did give high values.

I would check another existing circuit for comparison reasons

And do a Zs on the outgoing terminals of the RCD

cliffed · Nov 6, 2018

[ElectriciansForums.net] Funny old game,why oh why

buzzlightyear said:
Their is a lot of possible. V/D .cliffed.

davesparks · Nov 6, 2018

Are you using a normal efli test or using a low current/anti trip test?
The low current test will often give higher or inaccurate results, use the alternative test method to carry out a normal efli test.